Robin of Redesdale, sometimes called "Robin Mend-All", was the leader of an insurrection against King Edward IV of England. His true identity is unknown, but it is thought he could have been either Sir John Conyers of Hornby (d. 1490) or his brother Sir William Conyers of Marske (d. 1469), or even both. Whoever he was, the power behind his rebellion was Richard Neville, 16th Earl of Warwick ("Warwick the Kingmaker").[